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slash UK slash AI for people. Welcome to Scientific Americans Science of Summer Reading. I'm your host, Deboki, Chuck Reverdi.

Sometimes on Science Talk, we have conversations with authors about their books, but this series is a little

different. What I love as a reader is seeing how books can end up feeling like they're in conversation with each other, even when they're not written to do that.

So this month, I'm taking on two science books at a time and just chatting with you about them.

I'll be talking through what the authors made me think and feel. Maybe you've read these

books yourself. Maybe you've even had some of the same feelings. Or maybe not. And if you haven't read

them, well, maybe the science book talk will inspire you too.

Today, we're going to be exploring the abandoned and underground worlds that, for however removed

they may seem from people, embody our many contradictions.

Prologue, The Books.

The first book is Underland, A Deep Time Journey by Robert McFarlane.

In Underland, McFarlane explores several different types of underworlds throughout Europe,

beginning in Britain, traveling through the rest of the continent, and then heading further north.

The journey takes us from cave systems to buried cities to glaciers, all revealing different realms underneath our feet, and the aspects of geology, history, mythology, and biology

...